<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1, user-scalable=no">
    <meta http-equiv="X-UA-Compatible" content="ie=edge,chrome=1">
    <meta name="author" content="郝珍华">
    <title></title>
    <style>
    .container{
        width: 720px;
        height: 300px;
        border:1px solid;
        margin: 30px auto;
    }
    ul{
       margin: 0;
       padding: 0;
       list-style: none;
       margin-top: 10px;
    }
    li{
        float:left;
        border:1px solid;
        margin-left: 10px;
        margin-top: 2px;
        opacity: 0.2;
    }
    li:hover{
        opacity: 10;
    }
    </style>
</head>
<body>
  <div class="container">
    <ul>
        <li><img src="img/1.jpg" alt=""></li>
        <li><img src="img/2.jpg" alt=""></li>
        <li><img src="img/3.jpg" alt=""></li>
        <li><img src="img/4.jpg" alt=""></li>
        <li><img src="img/5.jpg" alt=""></li>
        <li><img src="img/6.jpg" alt=""></li>
        <li><img src="img/7.jpg" alt=""></li>
        <li><img src="img/8.jpg" alt=""></li>
        <li><img src="img/9.jpg" alt=""></li>
        <li><img src="img/10.jpg" alt=""></li>
        
    </ul>
  </div>
</body>
</html>